Sustained release oxycodone composition with acrylic polymer and surfactant
First Claim
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1. A controlled release composition comprising:
- a controlled release matrix comprising;
a pharmaceutically acceptable acrylic polymer; and
a surfactant in an amount selected, relative to the amount of said acrylic polymer, for and corresponding to a pre-determined release rate for said active ingredient.
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Abstract
The invention is a controlled release composition comprising a therapeutic amount of an active ingredient in a controlled release matrix. The matrix comprises a combination of a pharmaceutically acceptable acrylic polymer and a metal hydroxide. The amount of surfactant, relative to a given amount of acrylic polymer, is selected for and corresponds to a predetermined release rate for said active ingredient. The compound is preferably used to provide controlled release dosage of oxycodone through a matrix of ammonio methacrylic polymer and sodium lauryl sulfate.
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Citations
21 Claims
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1. A controlled release composition comprising:
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a controlled release matrix comprising; a pharmaceutically acceptable acrylic polymer; and a surfactant in an amount selected, relative to the amount of said acrylic polymer, for and corresponding to a pre-determined release rate for said active ingredient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 21)
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14. A controlled release composition comprising:
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a therapeutic amount of an active ingredient; and a controlled release matrix comprising; a pharmaceutically acceptable acrylic polymer; and a surfactant in an amount selected for and corresponding to a pre-determined release rate of said active ingredient such that the ratio of said surfactant to said acrylic polymer is about 0.005-0.5 by weight.
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20. A controlled release therapeutic composition comprising:
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a therapeutic amount of oxycodone or its pharmaceutically active salts; and a controlled release matrix comprising; a pharmaceutically acceptable ammonio methacrylate based polymer; and sodium lauryl sulfate in an amount selected for and corresponding to a pre-determined release rate for the oxycodone or its pharmaceutically active salts, such that the ratio of said sodium lauryl sulfate to said ammonio methacrylate based polymer is about 0.005-0.5 by weight.
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Specification